#17576: FreeModule.__contains__ is too lax in its test
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Reporter: nbruin | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.5
Component: linear algebra | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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See [https://groups.google.com/forum/#!topic/sage-support/ObKhoCN3KCs]:
{{{
sage: V = VectorSpace(RDF,3)
sage: v2 = vector(RDF, [1, 2, 3, 4])
sage: v2 in V
True
}}}
The containment test for free modules
`sage.modules.free_module.FreeModule_ambient.__contains__` doesn't bother
testing that the *number* of entries matches the rank.
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Ticket URL: <http://trac.sagemath.org/ticket/17576>
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